uilmit 优化

#!/bin/bash
sed -i "/^ulimit -SHn.*/d" /etc/rc.local
echo "ulimit -SHn 102400" >> /etc/rc.local

sed -i "/^ulimit -s.*/d" /etc/profile
sed -i "/^ulimit -c.*/d" /etc/profile
sed -i "/^ulimit -SHn.*/d" /etc/profile

cat >> /etc/profile << EOF
#
#
#
ulimit -c unlimited
ulimit -s unlimited
ulimit -SHn 102400
EOF

source /etc/profile
ulimit -a
cat /etc/profile | grep ulimit
echo -e "33[31m hosts ok 33[0m"

if [ ! -f "/etc/security/limits.conf.bak" ]; then
    cp /etc/security/limits.conf /etc/security/limits.conf.bak
fi
sed -i "/^*.*soft.*nofile/d" /etc/security/limits.conf
sed -i "/^*.*hard.*nofile/d" /etc/security/limits.conf
sed -i "/^*.*soft.*nproc/d" /etc/security/limits.conf
sed -i "/^*.*hard.*nproc/d" /etc/security/limits.conf
cat >> /etc/security/limits.conf << EOF
#
#
#
#
#---------custom-----------------------
#
*           soft   nofile       65535
*           hard   nofile       65535
*           soft   nproc        65535
*           hard   nproc        65535
EOF
cat /etc/security/limits.conf | grep "^*           .*"
echo -e "33[31m limits ok 33[0m"
sleep 1

 最后使用ulimit -a 可能看着没改变，可以在使用一次 source /etc/profile